GB1533132A - Electronic musical instrument - Google Patents

Electronic musical instrument

Info

Publication number
GB1533132A
GB1533132A GB33515/76A GB3351576A GB1533132A GB 1533132 A GB1533132 A GB 1533132A GB 33515/76 A GB33515/76 A GB 33515/76A GB 3351576 A GB3351576 A GB 3351576A GB 1533132 A GB1533132 A GB 1533132A
Authority
GB
United Kingdom
Prior art keywords
counter
key
memory
aug
count
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33515/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Publication of GB1533132A publication Critical patent/GB1533132A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H7/00—Instruments in which the tones are synthesised from a data store, e.g. computer organs
    • G10H7/02—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories
    • G10H7/06—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories in which amplitudes are read at a fixed rate, the read-out address varying stepwise by a given value, e.g. according to pitch
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
    • G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
    • G10H1/057—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by envelope-forming circuits
    • G10H1/0575—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by envelope-forming circuits using a data store from which the envelope is synthesized

Abstract

1533132 Electronic musical instruments NIPPON GAKKI SEIZO KK 12 Aug 1976 [21 Aug 1975] 33515/76 Heading G5J An electronic instrument of the kind having a memory storing numerically an attack-decay envelope is organized so that during a single depression of a key the memory can be read repeatedly and the amplitude of the musical tone repeatedly varied to provide a "repeatattack" effect. In Fig. 4 a counter 71, which operates in time-shared manner in twelve channels corresponding to twelve notes which may be played simultaneously, is incremented by clock pulses on line 74; at each count the value in the counter addresses the memory which delivers a value representing the instantaneous amplitude of the tone; every 64 counts a complete envelope is read out. A gate 99 is arranged to inhibit the pulses on line 74 when the counter is full, so the tome is sounded only once, unless a switch 91, 92, 93 is closed when the counter recycles continuously until the key is released. Different switches 91, 92, 93 introduce the repeat effect on different keyboards. When the key is released the counter continues to count to full from a fast clock causing a rapid decay (Fig. 6(d), not shown).
GB33515/76A 1975-08-21 1976-08-12 Electronic musical instrument Expired GB1533132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50101599A JPS5225614A (en) 1975-08-21 1975-08-21 Electronic musical instrument

Publications (1)

Publication Number Publication Date
GB1533132A true GB1533132A (en) 1978-11-22

Family

ID=14304841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33515/76A Expired GB1533132A (en) 1975-08-21 1976-08-12 Electronic musical instrument

Country Status (4)

Country Link
US (1) US4133244A (en)
JP (1) JPS5225614A (en)
DE (1) DE2637264A1 (en)
GB (1) GB1533132A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104219A (en) * 1976-02-27 1977-09-01 Nippon Gakki Seizo Kk Electronic musical instrument
JPS597395B2 (en) * 1977-04-04 1984-02-17 ヤマハ株式会社 electronic musical instrument device
JPS592038B2 (en) * 1977-07-12 1984-01-17 ヤマハ株式会社 electronic musical instruments
US4495846A (en) * 1977-11-14 1985-01-29 Williams S Keith Electronic musical instrument
JPS54121722A (en) * 1978-03-14 1979-09-21 Casio Comput Co Ltd Musical tone assignment system in electronic musical instruments
JPS54128323A (en) * 1978-03-28 1979-10-04 Nippon Gakki Seizo Kk Waveform generating device of electronic musical instrument
US4322996A (en) * 1980-04-16 1982-04-06 Norlin Industries, Inc. Alternating repeat keying signal generator
US4384503A (en) * 1981-05-22 1983-05-24 Pied Piper Enterprises, Inc. Mulitiple language electronic musical keyboard system
US5264657A (en) * 1989-04-24 1993-11-23 Kawai Musical Inst. Mfg. Co., Ltd. Waveform signal generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033219A (en) * 1975-02-27 1977-07-05 Nippon Gakki Seizo Kabushiki Kaisha Touch responsive control system for a keyboard electronic musical instrument

Also Published As

Publication number Publication date
DE2637264A1 (en) 1977-02-24
US4133244A (en) 1979-01-09
JPS5632636B2 (en) 1981-07-29
JPS5225614A (en) 1977-02-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940812